Hate to step into the middle of the AA/TWA inter-organizational dispute, but I'm afraid I believe sluggo is right.

TWA filed for bankruptcy as part of AA's acquisition of certain of TWA's assets (for a payment of $500 million) and assumption of its liabilities. There was no combining or buyout of stock -- TWA's stock would have been essentially worthless due to the bankruptcy filing.

I'm also not sure what the ruling of the CAB (which doesn't actually seem to apply in this case) has to do with any of this, considering the CAB no longer exists.

I'm additionally not sure what any of this has to do with the recall of flight attendants who were formerly employed by AA, then TWA. Is there some dispute over who should be recalled?